From: Alex Riesen <raa.lkml@gmail.com>
To: Oliver Neukum <oliver@neukum.org>
Cc: Alan Stern <stern@rowland.harvard.edu>,
linux-usb@vger.kernel.org, Oliver Neukum <oliver@neukum.name>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Greg Kroah-Hartman <greg@kroah.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: Oops in CDC ACM after an Openmoko phone (neo1973) changes its usb interface from ACM to Ethernet
Date: Mon, 3 Aug 2009 15:22:34 +0200 [thread overview]
Message-ID: <81b0412b0908030622r7abce823l2b382a5f3b75f50b@mail.gmail.com> (raw)
In-Reply-To: <200908031504.20506.oliver@neukum.org>
On Mon, Aug 3, 2009 at 15:04, Oliver Neukum<oliver@neukum.org> wrote:
> Am Montag, 3. August 2009 11:17:05 schrieb Alex Riesen:
>> 466 ep = (usb_pipein(acm->rx_endpoint) ? acm->dev->ep_in :
>> acm->dev->ep_out)
>> 467 [usb_pipeendpoint(acm->rx_endpoint)];
>> 468 if (usb_endpoint_xfer_int(&ep->desc))
>>
>> So it looks like ep is NULL (usb_endpoint_xfer_int accesses
>> desc.bmAttributes, which is 3 bytes off the beginning of struct
>> usb_host_endpoint (desc being the first field in usb_host_endpoint).
>
> This tells you that the device has been disconnected. The question
> is not why this function fails, but why it is called even though the
> device has been disconnected.
Cool. How can I help?
prev parent reply other threads:[~2009-08-03 13:22 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-02 16:40 Alex Riesen
2009-08-02 17:19 ` Oliver Neukum
2009-08-02 18:25 ` Alex Riesen
2009-08-02 20:39 ` Alex Riesen
2009-08-02 20:50 ` Alan Stern
2009-08-02 21:09 ` Alex Riesen
2009-08-02 21:22 ` Oliver Neukum
2009-08-02 21:25 ` Alex Riesen
2009-08-03 9:17 ` Alex Riesen
2009-08-03 13:04 ` Oliver Neukum
2009-08-03 13:22 ` Alex Riesen [this message]
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